AAPM TG-142 (Linac QA)
AAPM Task Group 142 — the standard for linear accelerator quality assurance.
Schedule
- Daily — output constancy, mechanical / safety interlocks
- Monthly — MLC position accuracy, imaging system QA
- Annual — comprehensive beam data, imaging system, radiation safety
Why it matters
Physicist-signed. A linac that fails TG-142 is not clinical-use-ready.